[Darryl Ramm]

Reinstalling Pro Tools won't trash third party plugins. But you better have all this backed up and ideally archives of any third party plugin installers especially ones you are worried about not being available now. Nobody here is going to go and check availability of plugins installers for you. That's your job.

Things usually don't just disappear. But now is the time to make sure you have good backups *from before* you had problems and don't go overwriting those backups now.